one of the best tactics to use with the Akula is closing the net, it requires SS-N-16 or 27 ASW sometimes you can use them without alerting the other submarine your there, and therefore you force his had to go evasive.
Basically 3 or 4 of these in each corner around him it basically gives him multiple TIW's and the realization that he has no direction to go the enemy isn't likely to pick up your shooting either as the TIW only happens when the torpedo is running.
by doing this you also for a substantial amount of time cloud your own movements to get out of the way of a torpedo and also force him to forget about his own fish or better still make him cut the wire.
Thermoclines help as do one active deep one active shallow to create a wall to mask your own escape.
No tactic is fool proof an experienced hunter wont bite at your bate and Ramiusing it may also work against you especially if the other player is an old hand